Use Pop-up Blocker

This policy setting allows you to manage whether unwanted pop-up windows appear. Pop-up windows that are opened when the end user clicks a link are not blocked. If you enable this policy setting most unwanted pop-up windows are prevented from appearing. If you disable this policy setting pop-up windows are not prevented from appearing. If you do not configure this policy setting pop-up windows are not prevented from appearing.

Notes

* Making mistakes while changing registry values can affect your system adversely. We recommend you to create a System Restore point before making registry manipulation. If you're new to Registry Editor, read this beginner's guide.